Since the ages plant has been playing a major role in the field of science. Especially the believes of tribes on some plants proved scientifically. These tribes got this medicinal knowledge of plants as a tradition. This study has made in Nalla mala forest, there are more than 6 tribal people living in different parts of the forest like palutla, Nekkanti Nadathadika, Chinthala gudams etc. I met the so called Dora, (Doctor) and collected 80% of medicinal plants. I also met another tribe chenchu leader who gave me another 20% of medicinal plants and their use I collated nearly 25 plants and 30 of their families. These, medicinal plants are very popular in near by towns. Most of the town people visit these gudams for medicines.